Barrel-heading-saw mechanism.



1,1. KROHN & F. J. DAVIS.

BARREL HEADING SAW MECHANISM.

APPLICATION FILED SEPT. 26, 1914.

Patented J une 12, 1917.

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J. L KROHN & F. LDAVIS.

BARREL HEADING S AW MECHANISM.

APPLICAUOH FILED stanza. :914.

' Pa-tented J une 12, 1917.

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nr sans arn'r rt JULIUS J. KROI-IN, 0F ARCATA, AND FREDERICK J. DAVIS, 01? OAKLAND, CALIFORNIA.

BARREL-HEADING-SAW MECHANISM.

Specification of Letters Patent.

Patented June 12, 1917.,

Application filed. September 26, 1914. Serial No. 863,696.

To all whom it may concern:

Be it known that we, JULIUS J. KRoHN and FnnDnRroK J. DAVIS, citizens of the United States, residing, the said KRonN at Arcata, in the county of Humboldt and State of California, and the said DAVIS at Oakland, county of Alameda, State of California, have invented certain new and useful Improvements in Barrel-Heading- Saw Mechanism, of which the following is a specification. 1

The present invention relates to improvements in sawing machines and more particularly to that type of machine for sawing barrel heads, and wherein it is desired to obtain a uniform cut of material rapidly and at little cost.

The invention has for itsprincipal objects to provide a sawing machine wherein the material is advanced in its carriage a predetermined distance at each operation thereof, so that a uniform cut may be obtained; one capable of adjustment to handle material of various sizes, and one which is entirely automatic in its operations, is simple in construction, and is thoroughly eflicient for the purposes designed.

The invention consists primarily in a cut ting member and a material holding member, one movable relative to the other, the material holding member provided with means for receiving material of different sizes and the material holding member also being provided with adjustable means for projecting the material into the path of the cutting member on the movement of the cutting member and material holding member relative to each other.

With the above mentioned and other ob jects in view the invention consists in the novel construction andcombination of parts hereinafter described, illustrated in the accompanying drawings and pointed out in the claims hereto appended; it being under stood that various changes in the form, proportion, size and minor details of construction within the scope of the claims may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

To more fully comprehend the invention, reference is directed to the accompanying drawings, wherein V Figure 1 is a view in front elevation of our invention with the material carrying carriage in its forward position. Fig. 2 is a View in front elevation with the material carrying carriage in its rearward position, and with the material feeding means in the operation of feeding the material from the carriage and to be operated on by the cutting member on the next operation of the material carrying carriage. Fig. 3 is an end view taken on line w-w of Fig. 1. Fig. 4 is a longitudinal sectional view of one of the material supporting and feeding rolls. Fig. 5 is a view taken on line 55 of Fig. 4:. Fig. 6 is a sectional view taken on line g g of Fig. 1.

Referring more particularly to the drawings, wherein like characters of reference designate corresponding parts throughout the several views, the numerals 1 indicate suitable spaced vertical frame members connected by upper and lower frame members 2 and 3, each provided with tracks 4:. Resting on the track of the lower frame member 3 are the grooved supporting wheels 5 carried by a rectangular carriage frame 6 which carries at its upper edge suitable grooved slides 7 which cooperate with the track on the upper frame member 2.

Pivotally connected at one end to one side of the carriage frame 6 is a link 7' formed at its opposite end with a plurality of apertures 8 through one of which extends the bolt 9 which pivotally connects the end of the link 7 with a lever 10 pivotally mounted as at 11. The lever 10 carries a sleeve 12 which connects through a pin 13 with the elongated slot 14: formed in the outer end of a crank 15 carried by a rotatable driven shaft 16 supported at its ends by the bearing members 17. A gear 18 is carried by the shaft 16 and the same intermeshes with a pinion 19 on a rotatably mounted shaft 20, also carried by the members 17 and said shaft is also equipped with a band pulley 21 around which extends a friction brake 21' operated by a handle 21 and adapted to stop the rotation of the shaft when a herein" after described clutch is disengaged.

A large band pulley 22 is also loosely carried by the shaft and around the same extends a belt 23 operating over a pulley 24 secured to a power shaft 25 rotatably mounted at its ends in bearings 26 carried by a frame 27 and carrying at one end a belt pulley 25. A friction clutch 22 is carried by the shaft 20 and controls the operation of the pulley therewith and permits the saw to be operated independently of the carriage.

A suitable circular saw 28 is carried on one end of the power shaft 25 and is positioned adjacent to one side edge of the material supporting frame and adapted to sever the material as presented on each reciprocation of the carriage frame 6.

It will be apparent that the power shaft operating in the direction of the arrow Fig. 2, will cause the same to be rotated and the carriage frame 6 to be reciprocated to and from the same.

Carried within the carriage frame 6 are vertically disposed spaced shafts 29 on which is adjustably mounted a bracket guide 30 formed on its ends with the downwardly extended portions 31 which are interiorly recessed, and in said recesses are adapted to slide the ends 33 of a top material supporting bracket 34 slidably mounted on the shafts 29 below the bracket guide 30 and normally separated therefrom by coiled springs 35 surrounding the shafts 29. A hand lever 36 pivotally connected as at 37 to a tongue depending from the bracket guide 30 is connected at its end through a link 38 with the bracket 34 and provides a means for raising and lowering the bracket without disturbing the bracket guide 30. A lower material supporting bracket 39 also connects the lower ends of the shafts 29.

Extending longitudinally of the material supporting brackets 34 and 39 are the upper and lower shafts 40 and 41 rotatably mounted in bearings 42 carried at adjacent side edges of the respective brackets and said shafts carry serrated feed rolls 43 adapted to engage into the material, as in Fig. 4.

Corresponding ends of the shafts 40 and 41 extend beyond the side edge of the carriage frame 6 and keyed to the end of each shaft is a flanged member 44 carrying the pawls 45 pressed inwardly by the springs 46, and said pawls cotiperate with the rotatably mounted ratchets 47 to which are secured the pinions 48. A vertically extending rack member 49 coiiperates with one side edge of the pinion 48 associated with the upper shaft 40 and a similar rackmember 49 co6perates with the opposite side edge of the pinion 48 associated with the lower shaft 41 and said rack members are connected in spaced relation by the spacing members 50, and operate at their lower ends in a guide 52 carried by the frame. The upper spacing member is connected through a link 52 with one end of a crank arm 53 pivoted to the carriage frame6, as at 54,

and the lower end of. said crank arm pro jects downwardly adjacent to the lower frame member 3 and is adapted when the carriage is in its rearward position to cooperate with one end of an adjustable screw 55 carried by a bracket 56 supported by the lower frame member 3, and when the carriage is in its forward position to contact with one end of an adjustable screw 57 carried by a bracket 58.

The material to be operated on is placed between the shafts 29 and is supported between the rotary shafts 40 and 41 by the feed rolls 43 and is maintained between the same by the pressure of the coiled springs 35. Power being applied to the belt pulley 25 to operate the same in the direction of the arrow and rotate the saw 28 in the direction of the arrow, the material is cut in the following manner The rotation of the shaft 25, will, through the belt 23 rotate the shaft 20 which will through the gear 18 and pinion 19 cause the shaft 16 to rotate in the direction of the arrow, and the rotation of this shaft, will, through the crank 15, lever 10, and link 7 cause the carriage frame 6 to reciprocate on the tracks 4, and move the material into engagement with the saw 28.

As the carriage frame 6 has about com pleted its movement away from the saw, the lower end of the crank arm 53 will engage the screw- 55 which will cause the racks 49 and 49 to be depressed to actuate the pinions 48 and these through the pawls 45, ratchet 47 and member 44, will cause the shafts 40 and 41 and feed rolls 43 to move in a direction toward each other in the direction of the arrows-Fig. 6, and feed the material a predetermined distance in front of the same.-

Immediately after the feeding of the material takes place, the carriage 6 is moved in a direction toward the revolving saw 28 which severs the projected portion of the material from its body and as the carriage has about completed its forward movement, the lower end of the crank arm 53 willengage the adjustable screw 57 which will cause the upper racks 49 and 49 to be raised, operating the pinions 48 to cause the ratchets 47 to ride free of the pawls 45 and position the racks to be depressed on the lower end of the arm 53 again contacting with the screw 55. The screws 55 and 57 are capable of adjustment to vary. the feed of the material in the carriage frame and the positioning of the bolt 9 in the apertures 8 provides a means for varying the reciprocating stroke of the carriage frame relative to the saw. By raising or lowering the bracket guide 30 on the shafts 29, material of different sizes is capable of being retained between the feed rolls 43.

The clutch 22 enables the movement of the carriage to be regulated independently 130 of the operation of the saw and permits the material to be positioned in the carriage while the same remains stationary.

Having thus described our invention what we claim as new and desire to protect by Letters Patent is 1. A machine of the class described comprising a material carrying carriage composed of spaced shafts, a guide extending across said carriage and mounted on said shafts, the said guide having downwardly extending arms with recesses therein, a material engaging bracket slidably mounted on said shafts and having outstanding arms riding in the recesses arranged within the extending portions of the guide.

2. A machine of the class described comprising a material carrying carriage composed of spaced shafts, a guide extending across said carriage and mounted on said shafts, the said guide having downwardly extending arms, a material engaging bracket mounted on the shafts, and having a sliding engagement with the downwardly extending arms of the guide, substantially as described.

3. A machine of the class described comprising a material carrying carriage composed of vertically disposed shafts, a guide mounted on said shafts and provided with extended guiding arms, a movable bracket slidably arranged on vertical shafts below the guide, and having portions extending therefrom operatively engaging the guiding arms on the guide, and a handle pivotally connected to the bracket and guide and having a portion accessible from the exterior of the carriage for raising and lowering the bracket, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JULIUS J. KROHN. lVitnesses A. M. CARROLL, W. HUNT. In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FREDERICK J. DAVIS. Witnesses:

HARRY A. TOTTEN, D. B. RICHARDS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

